As the smallest known frog species in the world's second largest mountain range, this new amphibian is easy to miss.
Scientists searching the Andes mountains in southern Peru spotted the coin-size creature -- a member of the Noblella genus -- in the leaf litter of a cloud forest between 3,025 and 3,190 metres.
Click here to see more about this frog on National Geographic news.
and here for National Geographic images of a new salamander and frog.